body {
  background-color: #f7f7f8;
}
/* 导航区域 */
.dao {
  display: flex;
  justify-content: space-around;
  height: 41px;
  line-height: 43px;
  background-color: #fff;
}
.dao h3 {
  font-size: 15px;

  font-weight: 400;
}
.dao a {
  display: block;
  height: 41px;
  color: #333;
}
.dao a:hover {
  color: #ff850d;
  border-bottom: solid 2px #ff850d;
}
/* 内容区域 */
.nav {
  padding: 10px;
  margin: 12px;
  height: 189px;
  background-color: #fff;
  border-radius: 5px;
}
.nav .nav-one {
  display: flex;
  justify-content: space-between;
  height: 47px;
  line-height: 47px;
  border-bottom: solid 1px #f5f5f5;
}

.nav img {
  margin-top: 6px;
  /* float: left; */
  height: 30px;
  width: 30px;
}
.nav .one01 {
  display: flex;
  width: 300px;
  height: 47px;
  border-bottom: solid 1px #f5f5f5;
  justify-content: space-between;
}
/* 底部区域 */
.footer{
    position: sticky;
    /* left: 0; */
    bottom: 0;

    display: flex;
    justify-content: space-evenly;
    height: 60px;
    background-color: #fff;
}
.footer span:nth-child(){
    margin-right: 70px;
}